Search Ctrl K
Home / Tools
THE FEUTEX TOOLKIT

MOSFET Hard-Switching Loss Budget

Separate approximate conduction and switching overlap losses.

Electronics workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaPcond=I²Rds D; Psw≈½VI(tr+tf)fs
Sources and model references

Worked example

Inputs

On-state current
10 A
On resistance
0.01 ohm
Duty fraction
0.5
Switched voltage
24 V
Rise transition
2e-08 s
Fall transition
2e-08 s
Switch frequency
100000 Hz

Expected results

Conduction loss
0.5 W
Overlap loss
0.48 W
Model total
0.98 W

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter the labeled inputs in the indicated units.
  2. Calculate and compare every output against the stated model assumptions.

Try this example

{
  "i": 10,
  "r": 0.01,
  "d": 0.5,
  "u": 24,
  "tr": 2e-8,
  "tf": 2e-8,
  "f": 100000
}

Accuracy and scope

Constant current and resistance; excludes reverse recovery, capacitance, gate-drive and temperature effects. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.